Device for measuring torque between two coaxial shafts

摘要

The device uses strain gauges within the joint between the two shafts, is slotted (5) to receive pointing rib (4) on the other shaft (2), and includes a ring (3) fixed to the first shaft (1). Portions (8) of ring adjacent to the slot are shaped to provide flexible sections. Each portion includes cut away portions (16) leaving projecting feet (9). Strain gauges (15) are glued to the remaining sections in order to detect the amount of flexing occurring as a function of the couple applied between the two shafts. There may also be a bearing surface (6) situated between the ring and the second shaft.